Agree with jtinn. I had a 336 and bought the 33H monos. Most notable improvement in my system was in the mid to upper midrange. Frank Sinatra sounded like he had a cold with the 336. The 33Hs cured him...big time!!!
Yes i have heard a Levinson 335.5 and I own a pair of 33H's and the 33H's are at a different level. Voices have a more organic quality and sound warmer & I dare say more tubelike than the 300 series amplifiers.
i've owned both the #33 and the #33h in a relatively small room (12' x 18') with no air conditioning. the #33h's really don't get hot at all. the #33's do put off a fair amount of heat but less than any of the many tube amps i've tried.
neither the #33h or the #33 ever really get hot to the touch......thanks to the world's best (and most beautiful) heat sinks.
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